README.md

Java client for XINTEST HT-2000 CO2 monitor

Contains console, GUI and MQTT clients

To run it just download zip file for latest release (https://github.com/eschava/HT2000-java/releases/latest) and unzip it.
Now you can run any .bat file and check result

Parameters of MQTT client are inside mqtt.bat file

USB error 3: Unable to claim interface: Access denied (insufficient permissions)

Please try solution from stackoverflow
If it doesn't work you can try next workaround:
add -DUSB.ClaimInterface=false parameter to the .sh(.bat) file right after "java" (with spaces of course)